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* bug#49536: 28.0.50; Confusing dolist-with-progress-reporter behaviour
@ 2021-07-12 15:33 Philip Kaludercic
  2021-07-13  1:18 ` Michael Heerdegen
  0 siblings, 1 reply; 5+ messages in thread
From: Philip Kaludercic @ 2021-07-12 15:33 UTC (permalink / raw)
  To: 49536

[-- Attachment #1: Type: text/plain, Size: 816 bytes --]


When evaluating this form

        (dolist-with-progress-reporter (i (number-sequence 1 4))
            "Doing stuff"
          (sleep-for 1))

I would expect to get the messages

Doing stuff...
Doing stuff...25%
Doing stuff...50%
Doing stuff...75%
Doing stuff...Done

each update after one argument of the list has been handled. Instead, it
seems I get

Doing stuff...
Doing stuff...33%
Doing stuff...66%
Doing stuff...100%
Doing stuff...Done

This confuses me, because after "processing" one out of four elements, I
wouldn't expect the message to say I already finished a third. And on
the other side, I am still not done after reaching 100%, and in this
case, am still waiting for the last element to be processed.

I am not sure if this is intentional, but in case it is no, the
following patch should fix it:


[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: 0001-Fix-dolist-with-progress-reporter-behaviour.patch --]
[-- Type: text/x-diff, Size: 945 bytes --]

From f7da2585886bd4fd795713a605ff6bd17a4c337a Mon Sep 17 00:00:00 2001
From: Philip Kaludercic <philipk@posteo.net>
Date: Mon, 12 Jul 2021 17:26:43 +0200
Subject: [PATCH] Fix dolist-with-progress-reporter behaviour

* subr.el (dolist-with-progress-reporter): Use the length of list
  argument as maximal value the reporter with reach
---
 lisp/subr.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/subr.el b/lisp/subr.el
index e49c277335..20f40be40d 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -5880,7 +5880,7 @@ dolist-with-progress-reporter
            (,count 0)
            (,list ,(cadr spec)))
        (when (stringp ,prep)
-         (setq ,prep (make-progress-reporter ,prep 0 (1- (length ,list)))))
+         (setq ,prep (make-progress-reporter ,prep 0 (length ,list))))
        (dolist (,(car spec) ,list)
          ,@body
          (progress-reporter-update ,prep (setq ,count (1+ ,count))))
-- 
2.30.2


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In GNU Emacs 28.0.50 (build 8, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0)
 of 2021-06-20 built on icterid
Repository revision: 869db473cbd510270faec2ba43dd4a5ba10b0020
Repository branch: feature/rcirc-update
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-- 
	Philip K.

^ permalink raw reply related	[flat|nested] 5+ messages in thread

* bug#49536: 28.0.50; Confusing dolist-with-progress-reporter behaviour
  2021-07-12 15:33 bug#49536: 28.0.50; Confusing dolist-with-progress-reporter behaviour Philip Kaludercic
@ 2021-07-13  1:18 ` Michael Heerdegen
  2021-07-13  6:54   ` Philip Kaludercic
  0 siblings, 1 reply; 5+ messages in thread
From: Michael Heerdegen @ 2021-07-13  1:18 UTC (permalink / raw)
  To: Philip Kaludercic; +Cc: 49536

Philip Kaludercic <philipk@posteo.net> writes:

> I am not sure if this is intentional

Looks more like a typical problem with counting...

> but in case it is no, the following patch should fix it:
>
> From f7da2585886bd4fd795713a605ff6bd17a4c337a Mon Sep 17 00:00:00 2001
> From: Philip Kaludercic <philipk@posteo.net>
> Date: Mon, 12 Jul 2021 17:26:43 +0200
> Subject: [PATCH] Fix dolist-with-progress-reporter behaviour
>
> * subr.el (dolist-with-progress-reporter): Use the length of list
>   argument as maximal value the reporter with reach
> ---
>  lisp/subr.el | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lisp/subr.el b/lisp/subr.el
> index e49c277335..20f40be40d 100644
> --- a/lisp/subr.el
> +++ b/lisp/subr.el
> @@ -5880,7 +5880,7 @@ dolist-with-progress-reporter
>             (,count 0)
>             (,list ,(cadr spec)))
>         (when (stringp ,prep)
> -         (setq ,prep (make-progress-reporter ,prep 0 (1- (length ,list)))))
> +         (setq ,prep (make-progress-reporter ,prep 0 (length ,list))))

I think this patch is correct: 0 stands for 0% finished, and we have
finished after processing 100% of the list's elements, whose number is
(length list).  With other words: we have (+ 1 (length list)) steps: one
after having processed each element, plus the one before having started.

Are you able to install the patch, or does someone else have to do it?


Thanks,

Michael.





^ permalink raw reply	[flat|nested] 5+ messages in thread

* bug#49536: 28.0.50; Confusing dolist-with-progress-reporter behaviour
  2021-07-13  1:18 ` Michael Heerdegen
@ 2021-07-13  6:54   ` Philip Kaludercic
  2021-07-13 13:14     ` Lars Ingebrigtsen
  0 siblings, 1 reply; 5+ messages in thread
From: Philip Kaludercic @ 2021-07-13  6:54 UTC (permalink / raw)
  To: Michael Heerdegen; +Cc: 49536

Michael Heerdegen <michael_heerdegen@web.de> writes:

> Philip Kaludercic <philipk@posteo.net> writes:
>
>> I am not sure if this is intentional
>
> Looks more like a typical problem with counting...
>
>> but in case it is no, the following patch should fix it:
>>
>> From f7da2585886bd4fd795713a605ff6bd17a4c337a Mon Sep 17 00:00:00 2001
>> From: Philip Kaludercic <philipk@posteo.net>
>> Date: Mon, 12 Jul 2021 17:26:43 +0200
>> Subject: [PATCH] Fix dolist-with-progress-reporter behaviour
>>
>> * subr.el (dolist-with-progress-reporter): Use the length of list
>>   argument as maximal value the reporter with reach
>> ---
>>  lisp/subr.el | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/lisp/subr.el b/lisp/subr.el
>> index e49c277335..20f40be40d 100644
>> --- a/lisp/subr.el
>> +++ b/lisp/subr.el
>> @@ -5880,7 +5880,7 @@ dolist-with-progress-reporter
>>             (,count 0)
>>             (,list ,(cadr spec)))
>>         (when (stringp ,prep)
>> -         (setq ,prep (make-progress-reporter ,prep 0 (1- (length ,list)))))
>> +         (setq ,prep (make-progress-reporter ,prep 0 (length ,list))))
>
> I think this patch is correct: 0 stands for 0% finished, and we have
> finished after processing 100% of the list's elements, whose number is
> (length list).  With other words: we have (+ 1 (length list)) steps: one
> after having processed each element, plus the one before having started.
>
> Are you able to install the patch, or does someone else have to do it?

I could push it, if nobody objects.

> Thanks,
>
> Michael.

-- 
	Philip Kaludercic





^ permalink raw reply	[flat|nested] 5+ messages in thread

* bug#49536: 28.0.50; Confusing dolist-with-progress-reporter behaviour
  2021-07-13  6:54   ` Philip Kaludercic
@ 2021-07-13 13:14     ` Lars Ingebrigtsen
  2022-07-16 12:32       ` Lars Ingebrigtsen
  0 siblings, 1 reply; 5+ messages in thread
From: Lars Ingebrigtsen @ 2021-07-13 13:14 UTC (permalink / raw)
  To: Philip Kaludercic; +Cc: Michael Heerdegen, 49536

Philip Kaludercic <philipk@posteo.net> writes:

> I could push it, if nobody objects.

Looks like the right fix to me, too.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no





^ permalink raw reply	[flat|nested] 5+ messages in thread

* bug#49536: 28.0.50; Confusing dolist-with-progress-reporter behaviour
  2021-07-13 13:14     ` Lars Ingebrigtsen
@ 2022-07-16 12:32       ` Lars Ingebrigtsen
  0 siblings, 0 replies; 5+ messages in thread
From: Lars Ingebrigtsen @ 2022-07-16 12:32 UTC (permalink / raw)
  To: Philip Kaludercic; +Cc: Michael Heerdegen, 49536

Lars Ingebrigtsen <larsi@gnus.org> writes:

>> I could push it, if nobody objects.
>
> Looks like the right fix to me, too.

Looks like this was pushed at the time, but the bug report was left
open, so I'm closing it now.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no





^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2022-07-16 12:32 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2021-07-12 15:33 bug#49536: 28.0.50; Confusing dolist-with-progress-reporter behaviour Philip Kaludercic
2021-07-13  1:18 ` Michael Heerdegen
2021-07-13  6:54   ` Philip Kaludercic
2021-07-13 13:14     ` Lars Ingebrigtsen
2022-07-16 12:32       ` Lars Ingebrigtsen

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